Import wpt@5915964199b07226bf6d8fbb177a63b1f272907a

third_party/WebKit/LayoutTests/imported/wpt/offscreen-canvas/pixel-manipulation/2d.imageData.put.modified.worker.js

+// DO NOT EDIT! This test has been generated by tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.put.modified
+// Description:putImageData() puts modified image data correctly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/common/canvas-tests.js");
+
+var t = async_test("putImageData() puts modified image data correctly");
+t.step(function() {
+
+var offscreenCanvas = new OffscreenCanvas(100, 50);
+var ctx = offscreenCanvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50)
+ctx.fillStyle = '#f00';
+ctx.fillRect(45, 20, 10, 10)
+var imgdata = ctx.getImageData(45, 20, 10, 10);
+for (var i = 0, len = imgdata.width*imgdata.height*4; i < len; i += 4)
+{
+    imgdata.data[i] = 0;
+    imgdata.data[i+1] = 255;
+}
+ctx.putImageData(imgdata, 45, 20);
+_assertPixelApprox(offscreenCanvas, 50,25, 0,255,0,255, "50,25", "0,255,0,255", 2);
+
+t.done();
+
+});
+done();